[Bug middle-end/77259] [6/7 Regression] ICE in emit_move_insn since r232167

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77259

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Aug 17 13:56:30 2016
New Revision: 239537

URL: https://gcc.gnu.org/viewcvs?rev=239537&root=gcc&view=rev
Log:
        PR middle-end/77259
        * tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): If
        turning a call into __builtin_unreachable-like noreturn call, adjust
        gimple_call_set_fntype.
        * tree-cfgcleanup.c (fixup_noreturn_call): Remove lhs also if
        gimple_call_fntype has void return type.

        * g++.dg/ipa/devirt-52.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/ipa/devirt-52.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfgcleanup.c
    trunk/gcc/tree-ssa-pre.c